SELF-LEVELING CONCRETE FLOOR UNDERLAYMENT
RECOMMENDED SPECIFICATION FOR LEVEL-RIGHT® PLUS CEMENTITIOUS SELF-LEVELING FLOOR UNDERLAYMENT FOR TOPPING CONCRETE FLOORS
PART 1 GENERAL
1.01 SUMMARY
A. This is the recommended specification for Level-Right Plus Cementitious Self-Leveling Floor Underlayment for topping concrete floors.
1.02 SECTION INCLUDES
A. Level-Right Plus Cementitious Self-Leveling Floor Underlayment
B. Manufacturer Approved Primer
1.03 QUALITY ASSURANCE
A. Installer's Qualifications: Installation of Level-Right Plus shall be by an applicator authorized by Rapid Floor Systems using approved mixing and pumping equipment.
1.04 DELIVERY, STORAGE AND HANDLING
A. General Requirements: Materials shall be delivered in their original, unopened packages, and protected from exposure to the elements. Damaged or deteriorated materials shall be removed from the premises.
1.05 SITE CONDITIONS
A. Environmental Requirements: Before, during and after installation of Level-Right Plus, building interior shall be enclosed and maintained at a temperature above 40 degrees F (4.4 degrees C) and below 100 degrees F (37.7 degrees C) until structure and subfloor temperature are stabilized.
PART 2 PRODUCTS
2.01 MATERIALS
A. Cementitious Self-Leveling Poured Floor Underlayment: Floor underlayment compound shall be Level-Right Plus Cementitious Self-Leveling Floor Underlayment as manufactured by Rapid Floor Systems, Hamel, MN.
B. Mix Water: Potable, free from impurities.
C. Concrete Primer: Manufacturer Approved Primer
2.02 MIX DESIGNS
A. General Requirements: Level-Right Plus mix proportions and methods shall be in strict accordance with product manufacturer recommendations.
PART 3 EXECUTION
3.01 PREPARATION
A. Condition and Cleaning of Subfloor: Subfloor shall be structurally sound. Steel troweled concrete, concrete sealed with curing compounds, or slick or smooth substrate surfaces must be shotblast or scarified. General Contractor shall clean subfloor to remove mud, oil, grease, and other contaminating factors before arrival of the Level-Right Plus underlayment crew.
B. Leak Prevention: Fill cracks and voids with a quick setting patching or caulking material where leakage of Level-Right Plus could occur.
C. Priming Subfloor: Prime concrete subfloor using the Manufacturer Approved Primer. Priming instructions vary according to the porosity of the concrete, multiple coats may be necessary.
D. Expansion Joints: Allow joints to continue through the Level-Right Plus at the same width.
3.02 APPLICATION OF SELF-LEVELING FLOORING
A. Scheduling: Application of Level-Right Plus shall not begin until the building is enclosed, including roof, windows, doors, and other fenestration. Install after drywall installation unless tenant finish requirements identify partitioning after the pour.
B. Application: Place Level-Right Plus 0 - 1 1/2" (0 - 38 mm). Deeper applications can be done in multiple lifts. Spread and float Level-Right Plus to a smooth surface. Except at authorized joints, place Level-Right Plus as continuously as possible until application is complete so that no Level-Right Plus slurry is placed against Level-Right Plus product that has obtained its initial set.
C. Drying: General Contractor shall provide continuous ventilation and adequate heat until
Level-Right Plus is dry. General contractor shall provide mechanical ventilation if necessary.
3.03 PREPARATION FOR INSTALLATION OF GLUE DOWN FLOOR GOODS
A. Floor Goods Attachment: See the brochure " Procedures for Attaching Finished Floor Goods" for guidelines for installing finished floor goods. This procedure is not a warranty and is to be used as a guideline only.
3.04 FIELD QUALITY CONTROL
A Field Samples: At least one set of 3 molded cube samples shall be taken from each day's pour during the Level-Right Plus application. Cubes shall be tested as recommended by Rapid Floor Systems in accordance with modified ASTM C 109. Test results shall be available to architect and/or contractor upon request from applicator.
3.05 PROTECTION
A. Protection From Heavy Loads: During construction, place temporary wood planking over Level-Right Plus wherever it will be subject to heavy wheeled or concentrated loads.
END OF SECTION
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